docs: def smsTextMode(self, textMode):
          """ Set to True for the modem to use text mode for SMS, or False for it to use PDU mode """
          if textMode != self._smsTextMode:
              if self.alive:
                  self.write('AT+CMGF={0}'.format(1 if textMode else 0))
              self._smsTextMode = textMode
              self._compileSmsRegexes()